Small field inflation

Author: dacf

August undefined, 2024

Webb14 juni 2024 · We show that the gauge field excitations on a set of coincident D7 branes, itself critical for moduli stabilization and hence intrinsic to inflation in string theory, coupled with axion fields from bulk fluxes, can act as a spectator sector during inflation. Webb30 mars 2024 · It is shown that in this class of models the symmetry structure leads to both large and small field inflationary trajectories within a single modular inflation …

Small field axion inflation with sub-Planckian decay constant

Webb10 sep. 2024 · We revisit the renormalizable polynomial inflection point model of inflation, focusing on the small field scenario which can be treated fully analytically. In particular, … Webb11 apr. 2024 · WASHINGTON, April 11 (Xinhua) -- March saw U.S. small business optimism fall for the 15th consecutive month, amid worries over record inflation and high interest rates. how many times has shaq been swept

A field range bound for general single-field inflation

Webb12 sep. 2016 · We consider “new inflation” inflationary models at small fields, embedded in minimal $$ \mathcal{N} $$ = 1 supergravity with a single chiral superfield. Imposing a … Webb7 jan. 2024 · Within General Relativity, a minimally coupled scalar field governed by a quadratic potential is able to produce an accelerated expansion of the universe provided … WebbWe study an axion inflation model recently proposed within the framework of type IIB superstring theory, where we pay a particular attention to a sub-Planckian axion decay constant. Our axion potential can lead to the small field inflation with a small tensor-to-scalar ratio, and a typical reheating temperature can be as low as GeV. how many times has senegal won afcon

Inflation with a class of concave inflaton potentials in Randall ...

Note on initial conditions for small-field inflation

WebbA scalar field having the Coleman-Weinberg type effective potential arises in various contexts of particle physics and serves as a useful framework for discussing cosmic … WebbWe consider the robustness of small-field inflation in the presence of scalar field inhomogeneities. Previous numerical work has shown that if the scalar potential is flat only over a narrow interval, such as in commonly considered inflection-point models, even small-amplitude inhomogeneities present at the would-be onset of inflation at τ = τi can … how many times has serena played venusWebb13 nov. 2011 · Using the effective theory of inflation, we propose a generalization of the Lyth bound that applies to models of inflation coupled to Einstein gravity. Our strongest bound applies to all single-field models with two-derivative kinetic terms for the scalar fluctuations and is always stronger than the corresponding bound for slow-roll models. how many times has sean hannity been married

"Webb14 okt. 2015 · In this article, I have studied the cosmological and particle physics constraints on a generic class of large field ( Δϕ > M p ) and small field ( Δϕ < M p ) models of brane inflationary magnetic field from: (1) tensor-to-scalar ratio (r), (2) reheating, (3) leptogenesis and (4) baryogenesis in case of Randall-Sundrum single braneworld … " - Small field inflation

Small field inflation

Webb25 aug. 2024 · Inflation in RS2 model generally predicts smaller scalar spectral indices and larger tensor-to-scalar ratios compared to standard inflation. However, large tensor-to … Webb1 juni 2012 · We argue that for small field inflation, minimizing fine tuning requires low energy supersymmetry and a tightly constrained structure. Hybrid inflation is almost an …

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WebbWe study small field models of inflation, which, against previous expectations, yield significant Gravitational Wave (GW) signal while reproducing other measured observable quantities in the... Webb11 aug. 2024 · It is shown that in this class of models the symmetry structure leads to both large and small field inflationary trajectories within a single modular inflation model. The …

Webb13 mars 2013 · We show that small-field inflation occurs exponentially more often than large-field inflation The power of primordial gravitational waves from inflation is generically tied to the scale of inflation. For small-field … Webb29 okt. 2024 · Large classes of standard single-field slow-roll inflationary models consistent with the required number of e-folds, the current bounds on the spectral index of scalar perturbations, the tensor-to-scalar ratio, and the scale of inflation can be efficiently constructed using genetic algorithms.

WebbFör 1 dag sedan · KUALA LUMPUR: Maybank Investment Bank (Maybank IB) has expanded its market coverage with the issuance of structured warrants over stocks listed on the New York Stock Exchange (NYSE), making it ... WebbOur axion potential can lead to the small field inflation with a small tensor-to-scalar ratio, and a typical reheating temperature can be as low as GeV. We study an axion inflation …

Webb1 juni 2012 · We explore some issues in slow roll inflation in situations where field excursions are small compared to M {sub p}. We argue that for small field inflation, minimizing fine tuning requires low energy supersymmetry and a tightly constrained structure. Hybrid inflation is almost an inevitable outcome.

Webb12 sep. 2016 · A bstract We consider “new inflation” inflationary models at small fields, embedded in minimal \mathcal {N} = 1 supergravity with a single chiral superfield. Imposing a period of inflation compatible with experiment severely restricts possible models, classified in perturbation theory. how many times has snoop dogg been arrestedWebb16 dec. 2024 · We focus on the behaviours of small field of an arctangent potential form, in Randall–Sundrum II braneworld. Within this framework, there is only one brane with positive tension while the second membrane is sent to infinity, and the configuration the model allows to localize the gravity on the curvature of the bulk. In that context, we … how many times has skt t1 won worldsWebb19 sep. 2024 · In the case of small field inflation there is a small window in parameter space of typical potentials such as where a phase of eternal accelerated expansion … how many times has seth rollins been championWebb22 mars 2024 · For the small field inflation, however, we present the parameter decoupling and coupling scenarios. For both scenarios, we compute and inspect n_s and r showing interesting results. For three different values of the number of e-folds N=60,65 and 70, we find that the coupling between f(R,T)1 and the scalar potential via the moduli space … how many times has shaq broke the backboardWebbFör 1 dag sedan · Federal Reserve (Fed) officials appear on track to extend their run of interest-rate hikes when they meet next month, shrugging off their advisers’ warning of recession with a bet that they need ... how many times has shaq won mvpWebb1 juni 2024 · Since there is a growing interest in studying inflationary models that meet both observational data and Swampland Criteria, the main goal of the present work is to … how many times has sharon stone been marriedWebbWe consider ”new inflation” inflationary models at small fields, embedded in minimal N = 1 supergravity with a single chiral superfield. Imposing a period of inflation compati how many times has sly stallone been married